I did all the burns in the same day w/ the same type of disc. These: http://www.amazon.com/gp/product/B000GHWRIK/ref=oh_aui_detailpage_o01_s01?ie=UTF8&psc=1
So I don't think there's a problem w/ the disc itself. But I guess the way I burned ROTJ doesn't quite match up w/ the way the first two movies are. Again, it would've been great if tehparadox had an ISO for episode 6 just like it had for episodes 4 and 5. Then I probably wouldn't have any issues. But with only a BDMV folder, it seems like I have to figure out filesystem types before I can get it working =/